Quake is about killing demons and zombies, but also has multiplayer deathmatch. It is very much like the video game Doom that id Software made before Quake.

Quake is a shareware game. Quake has four episodes, each that has a group of levels. Episodes 1 and 4, Dimension of the Doomed and The Elder World has seven levels and a secret level. Episodes 2 and 3, Realm of Black Magic and The Netherworld has six levels and a secret level. Plus the starting level, which is to choose difficulty and episode, and the final level. And as well, six deathmatch arenas. In the shareware version, the starting level and first episodes are the only levels and episodes that can be played.